Joe Jackson’s health took a turn for the worse today. The patriarch of the famous Jackson family, who was said to have been faring better healthwise, had gone for a checkup when his health deteriorated.

“Sources close to the family tell TMZ Joe was scheduled for some tests with his personal doctor Friday. However, Joe became weak during the tests and struck a high fever. We’re told that’s when his doc admitted Joe to the hospital … where he’s been ever since.

We’re told 87-year-old Joe still has a high fever, and docs can’t pinpoint exactly what’s wrong.”

Only two days ago, his son Jermaine Jackson, who recently visited Nigeria, was interview by the team at TMZ and he confirmed that his father’s health was on the mend, before today’s bad turn.